The reason for the lower level of body condition with higher amount of milk is the negative energy balance (NEB) the cow enters which is driven by the high milk production. This production exceeds the energy intake (Buckley et al., 2003) and the dairy cow needs to take her energy reserve...
The results for the reproductive hormones in cow serum are shown inFigure 1. There was no change in the GnRH level among the three sampling times (p> 0.05). The FSH, LH, and PRL levels at D12 were higher than those at D0 and D9 (p< 0.05). The OT level at D12 was only higher...
Furthermore, Stelzleni and Johnson [61] showed a PUFA level of 4.78% in cull dairy cow meat, and it is interesting to note that the mean PUFAn-6/PUFAn-3 ratio observed in the present study, 6.40 ± 0.502, was not far from the maximum ideal value suggested by Wijendran and Hayes ...
The emissions were positively related to culling rate and negatively related to milk production per cow and to production intensity. This means that improving the production and reproductive efficiency of animals can be relevant for reducing the environmental footprint of farms. Moreover, the fattening...